Losslessly compress PNG files.
Include forkme_right_darkblue_121621.png in the repo to reduce DNS lookup.
html files: Tidy up whitespace.

Use tabs consistently and remove trailing spaces.
Remove trailing spaces.
index.html:
* move inline style to docs.css
* remove border: 0 since it's inherited from img
* specify the image dimensions
src/js/javascript.js: lint
make.js: create the get dir if it doesn't exist.
src/css/docs.css: use lowercase z-index.
css: use one selector per line.
css: use 4 spaces for indentation.
css/docs.css: use the color name for white instead of hex.
.gitignore: sort entries by name.
Convert README and TODO to Markdown.

Also add more details.
Re-generate package.json and add missing properties.